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Friday, December 30, 2011

Car heater blowing warm, but not hot air?

Chevrolet Silverado 2500 blows warn air on both drivers and passenger side.But this air is not very hot.Previously it was very hot air.
In this case first inspect the Antifreeze level.If its low,then get it refilled to required level.
Other possibility can be faulty thermostat,there are two check both thermostats.
But if this possibilities are already been inspected or replaced.
Then try this,Take the heater hoses off at the firewall, use a pressure washer to flush both ways to the heater core to remove any coating on the inside left by the dexcool.

But if still the problem is same,then heater core is faulty and needs to be replaced.

5 comments:

I had no heater on transit connect. So I put a thermostat in, a new rad, a new matrix and new water pump but still nothing. I changed the egv water cooler today and now have heating but not hot just warm. I only get warm air if I'm flat out, but when going slow it blows cold. Anyone help?????